Cannot use JSX unless the '--jsx' flag is provided.ts(17004)
Specify JSX code generation: 'preserve', 'react', 'react-jsx', 'react-jsxdev' or'react-native'. Requires TypeScript version 2.2 or later.
The following changes are being made to your tsconfig.json file: - compilerOptions.jsx must be react-jsx (to support the new JSX transform in React 17)